diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index e6ea4898717..d0c898f2e97 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -16708,10 +16708,14 @@ static SDValue narrowExtractedVectorBinOp(SDNode *Extract, SelectionDAG &DAG) { assert(ExtractIndex % NumElems == 0 && "Extract index is not a multiple of the vector length."); EVT SrcVT = Extract->getOperand(0).getValueType(); + + // Bail out if this is not a proper multiple width extraction. unsigned NumSrcElems = SrcVT.getVectorNumElements(); - unsigned NarrowingRatio = NumSrcElems / NumElems; + if (NumSrcElems % NumElems != 0) + return SDValue(); // Bail out if the target does not support a narrower version of the binop. + unsigned NarrowingRatio = NumSrcElems / NumElems; unsigned BOpcode = BinOp.getOpcode(); unsigned WideNumElts = WideBVT.getVectorNumElements(); EVT NarrowBVT = EVT::getVectorVT(*DAG.getContext(), WideBVT.getScalarType(), |
